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Sept. 6, 1932- w. N. BOOTH METHOD OF MAKIN WHEEL HUBS s sheets-sheet 1 Original Filed April 27 1925 annotate t 71 2222? 4/. Baatfi W. N. BOOTH METHOD OF MAKING WHEEL HUBS Sept. 6, 1932.

' Original Filed April 27. 1925 s Sheets-Sheet 2 lvwz ntoz I 7/ 128 if??? A 30056 Patented Sept. 6, 1932 PATENT OFFICE WILLIAM N. BOOTH, OF DETROIT, MICHIGA N,

CORPORATION, OF DETROIT, MICHIGAN, .A.

ASSIGNOR TO KELSEY-HAYES WHEEL CORPORATION OF NEW YORK METHOD OF MAKING WHEEL HUBS Application filed April 27, 1925,

The invention relates to wheel hubs and refers more particularly to motor vehicle wheel hubs.

Heretofore it has been the usual practice to make the rear wheel hubs different from the front wheel hubs which necessitated different front and rear wheel detachable cover plates or disks. With my invention the rear wheel hub is manufactured with a seat m for a wheel cover plate or disk of the same size as the seat of the front Wheel hub so that the cover plates or disks of the front and rear wheels may be interchangeable.

Heretofore it has been customary to make the rear wheel hubs of one piece forgings machined to their proper dimensions. With myinvention a decided-decrease in the required machining may be secured with a consequent saving in time and lossof material and furthermore a decided decrease in weight may be secured. 7

With these objects aswell as other objects in view the invention resides in the novel features as more fullyhereinafter set forth.

In the drawings Figures 1 and 2 are op osite end views of a blank from. which is ormed part of the wheel hub embodying my invention;

Figure 3 is a cross section on the line 3'-3' 0 of Figure-1; v

Figures 4, 5, 6,.-7,-8,-9; 10, 11 and 12 are views similar to Figure 3' and-showing the wheel hub during its different stages of manu facture; I Figures 13 of the wheel hub shown in Figure 12. 1

Figure 15 is a transverse section through a motor vehicle wheelwiththe wheel hub embodying my invention applied. 40 In general my invention consists in forming the rear wheel hub with a seat for the wheel cover plate or disk of the same size as the seat of the front wheel hub so that y the cover plates or disks may be interchange able. Furthermore I form the wheel hubof and 14 are opposite end views- Serial No. 26,250. Renewed October 28, 1930.

a forged member and a drawn member, which are secured to each other and so arranged that the total weight of the wheel hub is less than that of a wheel hub'formed entirely of a forging and the amount of machining required is' materially decreased thereby saving considerable material and labor.

In forming my wheel hub I start with a -forged blank which as shown in Figures 1,

2 and 3 particularly comprises the barrel 1 and the radial annular flange 2 extending from the barrel intermediate its inner and outer barrel portions 3 and 4 respectively. The barrel 1 is solid and the annular flange 2 has upon its front side the cylindrical shoulder '5 concentric with the axis of the barrel and the annular groove 6 concentric with and of smaller diameter than the shoulder 5.

As shown in Figure 4 the barrel 1 of the forged blank is axially drilled and reamed to form the opening 7 which tapers inwardly. After the drilling and reaming step the bar- Tel 1 is broached to form the key way 8 extending'longitudinally of and opening into the opening 7, as shown in Figure 5.

a Figure 6 shows the wheel hub blank after the next step has been'pe'rformed. This step consists in" machining the periphery of the barrelportion 3 and facing its end, suflicient material being removed from the periphery and 'inwardly from its end to form the annular shoulder 9 which islocated approximately midway between the inner end of the barrel andthe inner face of the annular flange 2.

The barrel 1 is of such lengththat it affords suflicient bearing upon the axle to provide -astrong construction. However, this barrel-is not as long as the barrel of the corresponding wheel hub as customarily made heretofore. To complete the wheel hub and to make'the barrel thereof of the properlength-and at the same time to provide a seat uponthe barrel for a wheel cover plate sists in drilling or disk of the same size as the seat of the front wheel hub I have formed the sleeve '10 of drawn steel and having the portion 11 of an internal diameter such that it may be shrunk upon the reduced portion of the barrel portion 3 and abut the shoulder 9 thereof. This sleeve also has the flaring intermediate portion 12 connecting the portion 11 with the portion 13, the latter being of greater diameter than the former. Figure 7 shows the wheel hub blank after the sleeve has been secured to the forging.

As shown in Figure 8 the next step conthe angularly spaced openings 142 in the radial flange 2 of the .orged blank.

The forged blank and drawn sleeve are then finished by suitable machining operations to produce the-article shown in Fi ure 9. It will be noted that the forged b ank has had all of that material removed outside the dotted lilies shown in Figure 8. It will also be noted that the openings 14 have been finished and the periphery and end of the drawn sleeve have been finished. The enhub is manufactured so that interchangeable front and rear wheel cover plates or disks magsbe mounted thereon.

shown in Figure 10 the portion 13 of the sleeve is then externally threaded at 17.

The next step consists in chamfering the outer end of the barrel 1 at 18 as shown in Figure 11.

he final step consists in drilling the di ametrically oppositeholes 19 in the sleeve 10, the completed hub then having the form shown in Figures 12, 1d and 15.

What I claim as my invention is:

l. The manufacture of a wheel hub which comprises the forming of a forging having a barrel and a radially extending annular flange, the machining of the barrel to reduce a portion of its sleeve to form a portion adapted to engage over the portion of reduced diameter of the barrel and also to form a portion of greater diameter, the shrinking of the first menh tioned portion of the sleeve upon the reduced portion of the barrel and the machining of the portion of greater diameter of the sleeve to form an annular shoulder thereon.

2. The forming of a wheel hub which comprises the forging of'a body having a barrel and a radially extending'annular flange, the

an extension fonone of the hubs,

ment by the-cover diameter, the drawing of a h iterates axial boring of the barrel to form an opening therethrough for engagement by a. shaft, the machining of a portion of the barrel to reduce its ernal diameter and form an annular shoulder, the drawing of a sleeve having a portion adapted to engage the reduced portion of the barrel and a portion of greater diameter, the shrg of the first mentioned portion of the sleeve upon the reduced portion of the barrel and against the annular shoulder and the machg of the portion of greater diameter of the sleeve to form an annular flared seat intermediate its ends and external threads between the seat and one end.

3. The method of forming a wheel hub which comprises, the forming of a body with a barrel and a flan e, the forming of an annular shoulder on t e barrel inteediate the ends thereof, the forming of a sleeve with a portion adapted to engage over one end of the barrel and with other portion of great er diameter than the portion aforesaid, the securing of the sleeve to the barrel with the reduced and crtion thereof abutting said shoulder and t e fo a- 1g of an annular seat upon the portion of ater dieter of the sleeve.

t. In the manufacture of motor vehicle front and rear wheels including cover plates or discs and hubs having. seats for the cover plates or discs which comprises, providing interchangeable cover plates or discs, provi ing ing a seat on the extension corresponding to that of the other hub for alternative engagement by the cover plates or discs.

5. In the manufacture of motor vehicle front and rear wheels including cover plates or discs and hubs having seats for the cover plates or discs which comprises forming interchangeable cover plates having the same diameter of central opening, forming a sleeve, securing one end of the sleeve to one of the hubs in axial alignment therewith to form an ension therefor, forming a seat upon the sleeve having the same diameter as the seat on the other hub for alternative engagelates or discs.

and provid- 6. In the menu acture of motor vehicle frontand rear wheels including, cover plates or discs and hubs of difierent sizes having seats for the cover plates or discs which comprises, forming interchangeable cover plates aving the same diameter of central opening, forming a sleeve, securing onev end of the sleeve to one of the hubs to form an extension therefor and forming a seat upon the sleeve aving the same diameter as theseat on the other hub for alternative engagement by the cover plates or discs.

7. Those steps in the method of manufacturing a wheel hub which consists in forming a body with a barrel, reducing one end of the barrel to providean annular shoulder,

forming a sleeve with one end portion of 1:9

greater diameter than the barrel, shrinking [the opposite end of the sleeve upon the reduced end of the barrel in abutting relation to said shoulder and forming a seat upon the portion of greater diameter of the sleeve.

8. A wheel hub comprising a metal body having a barrel provided with a reduced end portion forming an annular shoulder and a metal sleeve extending axially of said barrel said sleeve having a reduced portion permanently secured upon the reduced end of said barrel in abutting relation to said shoulder a and having an enlarged portion provided with an annular shoulder beyond said barrel.

In testimony whereof I aflix my signature.

WILLIAM N. BOOTH. 

